Finding the Fourth Proportional to 818,627.12, 1,228,106.76 and 257,531.12
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Solution
The fourth proportional to 818,627.12, 1,228,106.76 and 257,531.12 is: 386,348.93
Step by Step Solution
- Step 1: Write the proportion equation
818,627.12 : 1,228,106.76 = 257,531.12 : x - Step 2: Convert to fraction form
818,627.12/1,228,106.76 = 257,531.12/x - Step 3: Cross multiply
818,627.12x = 1,228,106.76 × 257,531.12 - Step 4: Simplify right side
818,627.12x = 316,275,709,382.37 - Step 5: Solve for x
x = 316,275,709,382.37/818,627.12 - Step 6: Final answer
x = 386,348.93
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.